I have two scenarios which I am not able to complete :
1. full CRUD functionality for treegrid component
I'd like to know if there's a common way to add/delete items from the tree grid.
Also in this case i would appreciate if any user from the Ext community would point to a document where it is explained how a store works (and also which is the connection between the store and the gui element e.g. : treestore - treegrid)

2. I would like to achieve the following functionality : selecting on a checkbox belonging to a parent row will select all the rows corresponding to the child nodes for the parent row.

I don't have the code on which i've worked at hand (as it is at work), but i'm going to post it tommorow.